Fast Fault Protection Based on Direction of Fault Current for the High-Surety Power-Supply System

Accurate analysis and modeling of DC side short circuit transient is important for design of DC traction power supply system and assessment of the suitability of protection arrangement. In recent years, the overshoot and swing in short-circuit fault current profiles of subway traction power supply system can not be correct explained by the existing subway traction power supply system fault model. The second-order transient model on subway traction power supply system is presented by analyzing short-circuit fault current recorder, the commissioning test waveform and electrical parameters of subway train. Using this model, the simulation results are consistent with the fault recorder and the commissioning test current profiles. Also the origin of the overshoot and swing on the waveform is explained.

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The Development and Solution of Intelligent Secondary Power in Space

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.635-637.1118 ◽

2014 ◽

Vol 635-637 ◽

pp. 1118-1123

Author(s):

Xiao Peng Wang ◽

Ping Yu ◽

Xian Feng Li ◽

Xin Da Qi ◽

Yan Wang

Keyword(s):

Power Supply ◽

Power Supply System ◽

Health Management ◽

High Reliability ◽

Serial Communication ◽

Supply System ◽

Power Performance ◽

Fault Protection ◽

Management Function ◽

Secondary Power

Intelligent secondary power supply is a power supply which integrate power conversion , data acquisition, power control ,serial communication features for aviation, aerospace high-reliability power supply system, with the diagnosis, fault protection and power health management function. Intelligent design is a necessary measures to ensure and improve the secondary power performance , is the trend of secondary power supply system of the future, It solve the shortcomings of traditional secondary power system such as poor monitoring , lack of fault identification and diagnostics, improve the reliability of the secondary power supply greatly, has great significance to improve the design of space payload.

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Fault current identification of DC traction power supply system based on LMD time-frequency entropy

2016 IEEE International Conference on Power and Renewable Energy (ICPRE) ◽

10.1109/icpre.2016.7871207 ◽

2016 ◽

Author(s):

Liu Xiaohua ◽

Huang Jing ◽

Leng Yue ◽

Wang Zhiqi

Keyword(s):

Power Supply ◽

Power Supply System ◽

Supply System ◽

Fault Current ◽

Time Frequency ◽

Traction Power Supply System ◽

Traction Power Supply ◽

Traction Power

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A method for identifying the fault current of DC traction power supply system based on EMD approximate entropy

2017 International Conference on Green Energy and Applications (ICGEA) ◽

10.1109/icgea.2017.7925448 ◽

2017 ◽

Cited By ~ 2

Author(s):

Zhao Junyi ◽

Yang Chaoying ◽

Xue Zhiwei ◽

Leng Yue ◽

Wang Zhiqi

Keyword(s):

Power Supply ◽

Power Supply System ◽

Approximate Entropy ◽

Supply System ◽

Fault Current ◽

Traction Power Supply System ◽

Traction Power Supply ◽

Traction Power

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Development of the algorithm for the selection of a wind generator-based autonomous power supply system

Power and Autonomous equipment ◽

10.32464/2618-8716-2019-2-1-8-16 ◽

2019 ◽

Vol 2 (1) ◽

pp. 8-16 ◽

Cited By ~ 1

Author(s):

P. A. Khlyupin ◽

G. N. Ispulaeva

Keyword(s):

Wind Turbines ◽

Power Supply ◽

Alternative Energy ◽

Power Supply System ◽

Supply System ◽

Power Generators ◽

Energy Devices ◽

Wind Generator ◽

Alternative Energy Sources ◽

Selection Of

Introduction: The co-authors provide an overview of the main types of wind turbines and power generators installed into wind energy devices, as well as advanced technological solutions. The co-authors have identified the principal strengths and weaknesses of existing wind power generators, if applied as alternative energy sources. The co-authors have proven the need to develop an algorithm for the selection of a wind generator-based autonomous power supply system in the course of designing windmill farms in Russia. Methods: The co-authors have analyzed several types of wind turbines and power generators. Results and discussions: The algorithm for the selection of a wind generator-based autonomous power supply system is presented as a first approximation. Conclusion: The emerging algorithm enables designers to develop an effective wind generator-based autonomous power supply system.

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